Sarah D de Ferranti, John P A Ioannidis, Joseph Lau, William V Anninger, Michael Barza
de Ferranti S D, Ioannidis J P A, Lau J, Anninger W V, Barza M.
Are amoxycillin and folate inhibitors as effective as other antibiotics for acute sinusitis? A meta-analysis
BMJ 1998; 317 :632
doi:10.1136/bmj.317.7159.632